Question about Lexmark T640 Laser Printer

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T640 won't print on envelopes

Networked Lexmark T640 used to print envelopes through the MP feeder. For some unknown reason when you send an envelope job from Word it will now print out pages and pages of paper with symbols across the top line only or, it will print the address for the envelope onto a piece of cassette paper - bypassing the envelope loaded on the MP feeder. Any ideas?

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5 Suggested Answers

  • 13 Answers

SOURCE: Envelopes

Make sure the paper type for the tray from which you print envelope is set to Envelope. If the printer doesn't know that an envelope is being printed, it will not turn on the "Envelope Enhance" feature. The Envelope Enhance feature pumps air out of the envelope before it enters the fuser and can prevent creasing in the envelope. However, keep in mind that any envelopes larger than a US Size 10 will most likely crinkle, with or without the Envelope Enhance

Posted on Feb 06, 2009

  • 1564 Answers

SOURCE: I have a Lexmark C510, how do I print a business envelope?

You can load up to 10 envelopes in the standard tray. Try a sample of any envelopes you are
considering using with the printer before buying large quantities. See Loading envelopes in the
standard tray
for instructions on loading envelopes.
When printing on envelopes:
To achieve the best possible print quality, use only high-quality envelopes that are designed
for use in laser printers.
Set the Paper Source in the Paper Menu based on the source you are using, set the Paper
Type to Envelope, and select the correct envelope size from the operator panel, the printer
driver, or from MarkVision Professional.
For best performance, use envelopes made from 90 g/m2 (24 lb bond) paper. You can use up
to 105 g/m2 (28 lb bond) weight for the 250-sheet standard tray or 105 g/m2 (28 lb bond)
weight for envelopes as long as the cotton content is 25% or less. Envelopes with 100%
cotton content must not exceed 90 g/m2 (24 lb bond) weight.
Use only new, undamaged envelopes.
For best performance and to minimize jams, do not use envelopes that:
Have excessive curl or twist.
Are stuck together or damaged in any way.
Contain windows, holes, perforations, cutouts or embossing.
Use metal clasps, string ties, or metal folding bars.
Have an interlocking design
Have postage stamps attached
Have any exposed adhesive when the flap is in the sealed or closed position
Have nicked edges or bent corners
Have rough, cockle, or laid finishes
Use envelopes that can withstand temperatures of 170°C (338°F) without sealing, excessive
curling, wrinkling, or releasing hazardous emissions. If you have any doubts about the
envelopes you are considering using, check with the envelope supplier.
Adjust the width guide to fit the width of the envelopes.
Load only one size of envelope at a time in the tray. Envelopes may only be loaded in the
standard tray. Load them with the flap down and the flap to the left of the tray.
A combination of high humidity (over 60%) and the high printing temperatures may seal the
envelopes.

Loading envelopes in the standard tray
The recommended stack height is 10 envelopes; however, in normal environments as many as 15
envelopes may be loaded. In high temperature or humidity environments, only seven envelopes
should be loaded.
1 Pull the standard tray completely out.
2 Squeeze the length guide tabs together as shown in step 2 on page 42. Slide the guide to
the correct position for the size of envelope you are loading.
3 Squeeze the width guide tabs as shown in step 3 on page 42. Slide the width guide to the
correct position for the size of envelope you are loading. Notice the size indicators on the
bottom left of the tray.
4 Push the envelope stack aid tabs toward each other. They snap into place.
5 Flex a stack of envelopes back and forth and then straighten the edges on a level surface.
Press down the corners to flatten them.
Fan the envelopes. This prevents the edges of the envelopes from sticking together and helps
them feed properly.
6 Load envelopes flap side down with the stamp area and flap on the right. The end of the envelope with the stamp area enters the printer first.

7 Insert the standard tray.

Posted on Apr 04, 2009

Roop1980
  • 228 Answers

SOURCE: won't print envelopes in black

First you need to change the settings in the software you are trying to print the envelope. Open the program (for example MS Word), go to the option from which you print envelopes and labels. Set the font color to black, not "automatic", and in Word, click "default", which sets the color as black rather than allowing the printer or its software to select the wrong color. Then try to print on the envelope and let us know if you are able to print the envelope in black only.

Posted on Apr 14, 2009

  • 27 Answers

SOURCE: My lexmark will print page, business cards, labels, pics, etc. But it will not print envelopes. Looks, sounds, and acts like its printing. But when it spits out the envelope nothing is printed on it.

There must be an issue with the size of the envelope the printer is expecting. If you're using Microsoft Word, check under "Letters and Mailings" and then "Evevolopes and Labels" to check the size you have set the envelope to. Perhaps its also a setting in File and Page Setup or in the printers own settings under Control Panel and Printers. Sorry for not being of more help but if its not jamming or giving an error then its probably just set to the wrong envelope size.

Posted on May 17, 2009

Roop1980
  • 228 Answers

SOURCE: Lexmark z705 printing blank envelopes soft ware ok

The problem that you are experiencing is caused by the way the text is formatted in most word processing documents. By default envelopes are printed not in black, but a dark gray. This confuses the printer and causes it to use the color cartridge to process gray instead of using the black cartridge.

You can fix this problem with one of two ways:

1. Click on "Start", "Control Panel" and click on "Printers and Faxes." Right click on the "Lexmark Printer" icon and select "Properties." Click on "Printing Preferences." Go to "Quality/Copies" tab and select the option "Print color images in black and white."
2. You can also change the color of you text to a true black in your word processor. This will require you to resort to the word processor's documentation and help files.

Both of these settings will cause your printer to use the black cartridge instead of the color. If either one of these solutions solves your problem, it means your color cartridge needs to be cleaned or replaced. If you feel that the color cartridge should not be out of ink, please follow the steps given below:

Clean Nozzle Procedure:

1. Go to the "Solution Center" and click on the "Maintenance" tab.
2. Select "Clean to fix horizontal strips."
The colors that you should see here are black, yellow, magenta (a reddish purple) and cyan (a dark sky blue). You should notice the diagonal lines above and below the solid horizontal lines. These diagonal lines should be solid from left to right with no gaps.

If there are gaps in the lines or the print diminishes across the page, you should run the "Clean Print Nozzles" page a couple more times to try and clear it up. If you still have gaps at the top and bottom, you should "wick" the cartridges by following the steps given below:

“Wicking” Procedure:

1. Select "Install color/black cartridge" and remove the cartridge from the printer.
2. Get a damp paper towel.
3. Set the ink cartridge right side up on the damp paper towel so that the ink nozzles are against the towel and hold the cartridge in this position for about 15 seconds.
4. Now wipe the print head (on the bottom where the ink comes out) across in one direction only (left to right) until it looks clean.
5. Next dab the cartridge on the towel to make sure that the ink is flowing.
6. Snap the cartridge back into the printer.
7. On your computer, select "Old Cartridge installed."
8. Repeat the "Clean to fix horizontal strips" procedure listed above.

If this procedure does not help, please let us know so that we can continue with technical support.

Posted on Oct 01, 2009

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1 Answer

I cannot get the envelope fuction to work correctly. The printer tells me I have a paper jam, when in fact I am trying to print an envelope


The printer will stop printing is there is an error, check for any paper jam before printing. Take note of the error message and locate the exact jam.


Use the manual feeder when printing on envelopes. You may click on the link http://bit.ly/rnHp5b to see instructions on how to go about the procedure using the manual feeder.


For further assistance, please call Lexmark Technical Support.

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The Lexmark T640 and similar printers requires a separate part known as an Envelope Feeder. They can be purchased at your local office supplies store.
http://www.officedepot.com/a/products/430730/Lexmark-85-Envelope-Feeder-For-T640/

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Here's the link to the Lexmark website to download the Lexmark C543 User's Guide. http://www.lexmark.com/publications/pdfs/2007/c54x/v14841473_en.pdf. There are two ways to print #10 envelopes, using the Multipurpose Feeder or the Manual Feeder. If you don't have the Mulitpurpose Feeder, you have to use the Manual Feeder and feed the envelopes one at a time. Scroll to Page 44 for MPF instructions or Page 46 for Manual Feeder instructions. Hope this helps.

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find the switch and turn it to auto paper in the printer settings, mp is for manual paper feed ap is probally for auto paper feed, its a guess . hope it helps

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I was so pissed off that so many on the web had this same problem that I spent many hours trying to get it to work. I am sure that this is not how it is designed to work but my envelopes got printed.First I went under File, Print, Properties to Page Set-up for envelope #10. I also ********** print colour images in black and white which someone else had suggested- although it might not be necessary. I selected quick print but normal should probably work too. I then closed out these two windows. Then under tools, I selected Letters and Mailing, then envelopes and labels, typed in the addresses, went under options and changed the feed from automatic to default tray, which automatically changes the feed method to the 4th one out of 6 which wasn't what I wanted but ignore it. Check off face up. Putting the envelope into the printer was bizarre- it has to be inserted very far into the printer until only 2-3 inches of the envelope stick above the horizontal surface of the printer. It must be inserted into the middle of the paper holder, until it is just 2-3 inches sticking up, and then slide it all the way over to the right where the printer indicates the envelope should be- nice and straight against the right margin. Do not use the movable paper holders that they suggest you swing over to the right to hold your envelope- or printing won't occur for some odd reason. Press O.K. on envelopes and labels and then press print. Good luck- it worked for me.

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You have to either use the MP Feeder or an Envelope Feeder. When you send the job to the "Manual Envelope" option, it will beep and prompt before each envelope is printed. Same will happen when you use the "Manual Paper" option.

You will have a hard time printing 1000 envelopes. The printer will print a rated engine speeed for the first 6-10...After that, the narrow media sensor will force the printer to slow down and you will proabably get 5-6 envelopes printed per minute.

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How do I set the top margin on a Lexmark T640?


Sorry for the delay, but I'm new to this site and still trying to figure out how this site works.

OK, are you printing this envelope field from an application such as Word or from an application that sends explicit cursor move commands?

Are you using the correct envelope definition?

Can you do a "Print To File" from the print page menu and then send the failing print job to me so I can look at the file in binary format and see what information is actually being sent to the printer.

My e-mail address is janddgasrepair@verizon.net.

Don

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Lexmark says that this is a feature called Envelope Enhance. Two rollers 'thump' to remove air pockets in the envelopes to prevent creasing and wrinkling. The "feature" can be turned off in the Paper Menu.

Apr 11, 2008 | Printers & Copiers

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